I already talked several times with the German Shopify support and posted this topic in the German forum.
This topic is quite urgent to most merchants in Germany (and maybe other European countries) as Christmas time is coming up.
There is no useful workaround and we can currently not sell vouchers at all. I have tried overriding categories with tax regulations as suggested by the Germany shopify Support, but they have apparently not tested it themselves, as Shopify doesnt allow to override gift cards or categories including the gift cards.
Is this topic in the technical Roadmap already?
Many thanks for your understanding,